1 | /* |
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2 | * libcaca Colour ASCII-Art library |
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3 | * Copyright (c) 2002-2009 Sam Hocevar <sam@hocevar.net> |
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4 | * All Rights Reserved |
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5 | * |
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6 | * $Id: slang.c 3985 2009-11-21 10:26:31Z jylam $ |
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7 | * |
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8 | * This library is free software. It comes without any warranty, to |
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9 | * the extent permitted by applicable law. You can redistribute it |
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10 | * and/or modify it under the terms of the Do What The Fuck You Want |
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11 | * To Public License, Version 2, as published by Sam Hocevar. See |
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12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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13 | */ |
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14 | |
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15 | /* |
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16 | * This file contains the libcaca SLang input and output driver |
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17 | */ |
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18 | |
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19 | #include "config.h" |
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20 | |
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21 | #if defined(USE_SLANG) |
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22 | |
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23 | #if defined(HAVE_SLANG_SLANG_H) |
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24 | # include <slang/slang.h> |
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25 | #else |
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26 | # include <slang.h> |
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27 | #endif |
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28 | |
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29 | #include <stdlib.h> |
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30 | #include <string.h> |
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31 | |
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32 | #if defined(HAVE_SIGNAL_H) |
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33 | # include <signal.h> |
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34 | #endif |
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35 | |
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36 | #include "caca.h" |
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37 | #include "caca_internals.h" |
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38 | |
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39 | /* |
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40 | * Global variables |
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41 | */ |
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42 | |
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43 | /* Tables generated by tools/optipal.c */ |
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44 | static int const slang_palette[2*16*16] = |
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45 | { |
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46 | 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0, |
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47 | 9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0, 0, 8, |
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48 | 8, 7, 7, 8, 15, 7, 7, 15, 15, 9, 9, 15, 1, 9, 9, 1, |
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49 | 7, 9, 9, 7, 8, 1, 1, 8, 0, 1, 15, 10, 10, 15, 2, 10, |
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50 | 10, 2, 7, 10, 10, 7, 8, 2, 2, 8, 0, 2, 15, 11, 11, 15, |
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51 | 3, 11, 11, 3, 7, 11, 11, 7, 8, 3, 3, 8, 0, 3, 15, 12, |
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52 | 12, 15, 4, 12, 12, 4, 7, 12, 12, 7, 8, 4, 4, 8, 0, 4, |
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53 | 15, 13, 13, 15, 5, 13, 13, 5, 7, 13, 13, 7, 8, 5, 5, 8, |
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54 | 0, 5, 15, 14, 14, 15, 6, 14, 14, 6, 7, 14, 14, 7, 8, 6, |
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55 | 6, 8, 0, 6, 4, 6, 6, 4, 12, 14, 14, 12, 6, 2, 2, 6, |
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56 | 14, 10, 10, 14, 2, 3, 3, 2, 10, 11, 11, 10, 3, 1, 1, 3, |
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57 | 11, 9, 9, 11, 1, 5, 5, 1, 9, 13, 13, 9, 5, 4, 4, 5, |
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58 | 13, 12, 12, 13, 4, 14, 6, 12, 12, 6, 14, 4, 6, 10, 2, 14, |
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59 | 14, 2, 10, 6, 2, 11, 3, 10, 10, 3, 11, 2, 3, 9, 1, 11, |
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60 | 11, 1, 9, 3, 1, 13, 5, 9, 9, 5, 13, 1, 5, 12, 4, 13, |
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61 | 13, 4, 12, 5, 0, 7, 0, 15, 15, 8, 8, 15, 15, 1, 7, 1, |
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62 | 1, 6, 2, 5, 3, 4, 4, 3, 5, 2, 6, 1, 0, 0, 1, 1, |
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63 | 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 2, 2, 3, 3, |
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64 | 4, 4, 5, 5, 6, 6, 7, 7, 14, 9, 1, 15, 8, 9, 8, 8, |
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65 | 9, 9, 1, 7, 0, 9, 9, 8, 6, 9, 13, 10, 2, 15, 8, 10, |
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66 | 7, 2, 15, 2, 2, 7, 0, 10, 10, 8, 5, 10, 12, 11, 3, 15, |
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67 | 8, 11, 7, 3, 15, 3, 3, 7, 0, 11, 11, 8, 4, 11, 11, 12, |
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68 | 4, 15, 8, 12, 7, 4, 15, 4, 4, 7, 0, 12, 12, 8, 3, 12, |
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69 | 10, 13, 5, 15, 8, 13, 7, 5, 15, 5, 5, 7, 0, 13, 13, 8, |
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70 | 2, 13, 9, 14, 6, 15, 8, 14, 7, 6, 15, 6, 6, 7, 0, 14, |
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71 | 14, 8, 1, 14, 5, 6, 2, 4, 13, 14, 10, 12, 4, 2, 3, 6, |
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72 | 12, 10, 11, 14, 6, 3, 1, 2, 14, 11, 9, 10, 2, 1, 5, 3, |
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73 | 10, 9, 13, 11, 3, 5, 4, 1, 11, 13, 12, 9, 1, 4, 6, 5, |
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74 | 9, 12, 14, 13, 5, 14, 2, 12, 13, 6, 10, 4, 4, 10, 3, 14, |
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75 | 12, 2, 11, 6, 6, 11, 1, 10, 14, 3, 9, 2, 2, 9, 5, 11, |
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76 | 10, 1, 13, 3, 3, 13, 4, 9, 11, 5, 12, 1, 1, 12, 6, 13, |
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77 | 9, 4, 14, 5, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, |
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78 | }; |
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79 | |
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80 | static int const slang_assoc[16*16] = |
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81 | { |
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82 | 134, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
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83 | 28, 135, 214, 86, 219, 91, 133, 127, 26, 23, 240, 112, 245, 117, 141, 126, |
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84 | 37, 211, 142, 83, 206, 132, 78, 160, 35, 237, 32, 109, 232, 140, 104, 161, |
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85 | 46, 87, 82, 143, 131, 215, 210, 169, 44, 113, 108, 41, 139, 241, 236, 170, |
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86 | 55, 222, 203, 130, 144, 94, 75, 178, 53, 248, 229, 138, 50, 120, 101, 179, |
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87 | 64, 90, 129, 218, 95, 145, 223, 187, 62, 116, 137, 244, 121, 59, 249, 188, |
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88 | 73, 128, 79, 207, 74, 202, 146, 196, 71, 136, 105, 233, 100, 228, 68, 197, |
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89 | 122, 153, 162, 171, 180, 189, 198, 147, 16, 25, 34, 43, 52, 61, 70, 18, |
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90 | 15, 27, 36, 45, 54, 63, 72, 17, 151, 155, 164, 173, 182, 191, 200, 124, |
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91 | 154, 22, 238, 110, 243, 115, 156, 24, 150, 152, 216, 88, 221, 93, 148, 20, |
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92 | 163, 235, 31, 107, 230, 165, 102, 33, 159, 213, 250, 85, 208, 157, 80, 29, |
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93 | 172, 111, 106, 40, 174, 239, 234, 42, 168, 89, 84, 251, 166, 217, 212, 38, |
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94 | 181, 246, 227, 183, 49, 118, 99, 51, 177, 224, 205, 175, 252, 96, 77, 47, |
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95 | 190, 114, 192, 242, 119, 58, 247, 60, 186, 92, 184, 220, 97, 253, 225, 56, |
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96 | 199, 201, 103, 231, 98, 226, 67, 69, 195, 193, 81, 209, 76, 204, 254, 65, |
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97 | 123, 149, 158, 167, 176, 185, 194, 19, 125, 21, 30, 39, 48, 57, 66, 255, |
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98 | }; |
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99 | |
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100 | /* |
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101 | * Local functions |
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102 | */ |
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103 | static void slang_init_palette(void); |
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104 | static void slang_write_utf32(uint32_t); |
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105 | |
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106 | #if defined(HAVE_SIGNAL) |
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107 | static RETSIGTYPE sigwinch_handler(int); |
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108 | static caca_display_t *sigwinch_d; /* FIXME: we ought to get rid of this */ |
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109 | #endif |
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110 | #if defined(HAVE_GETENV) && defined(HAVE_PUTENV) |
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111 | static void slang_install_terminal(caca_display_t *); |
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112 | static void slang_uninstall_terminal(caca_display_t *); |
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113 | #endif |
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114 | |
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115 | struct driver_private |
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116 | { |
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117 | char *term; |
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118 | }; |
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119 | |
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120 | static void default_sigint (int sig) |
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121 | { |
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122 | /* Do nothing */ |
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123 | return; |
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124 | } |
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125 | |
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126 | static int slang_init_graphics(caca_display_t *dp) |
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127 | { |
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128 | dp->drv.p = malloc(sizeof(struct driver_private)); |
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129 | |
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130 | #if defined(HAVE_GETENV) && defined(HAVE_PUTENV) |
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131 | slang_install_terminal(dp); |
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132 | #endif |
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133 | |
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134 | #if defined(HAVE_SIGNAL) |
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135 | sigwinch_d = dp; |
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136 | signal(SIGWINCH, sigwinch_handler); |
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137 | #endif |
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138 | |
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139 | _caca_set_term_title("caca for S-Lang"); |
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140 | |
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141 | /* Initialise slang library */ |
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142 | SLsig_block_signals(); |
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143 | /* Disable SLang's own SIGINT on ctrl-c */ |
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144 | SLang_set_abort_signal(default_sigint); |
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145 | |
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146 | SLtt_get_terminfo(); |
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147 | |
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148 | if(SLkp_init() == -1) |
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149 | { |
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150 | SLsig_unblock_signals(); |
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151 | return -1; |
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152 | } |
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153 | |
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154 | SLang_init_tty(-1, 0, 1); |
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155 | |
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156 | if(SLsmg_init_smg() == -1) |
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157 | { |
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158 | SLsig_unblock_signals(); |
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159 | return -1; |
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160 | } |
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161 | |
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162 | SLsmg_cls(); |
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163 | SLtt_set_cursor_visibility(0); |
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164 | SLkp_define_keysym("\e[M", 1001); |
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165 | SLtt_set_mouse_mode(1, 0); |
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166 | SLsmg_refresh(); |
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167 | |
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168 | /* Disable scrolling so that hashmap scrolling optimization code |
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169 | * does not cause ugly refreshes due to slow terminals */ |
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170 | SLtt_Term_Cannot_Scroll = 1; |
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171 | |
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172 | slang_init_palette(); |
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173 | |
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174 | #if defined(VMS) || defined(REAL_UNIX_SYSTEM) |
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175 | /* Disable alt charset support so that we get a chance to have all |
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176 | * 256 colour pairs */ |
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177 | SLtt_Has_Alt_Charset = 0; |
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178 | #endif |
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179 | |
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180 | #ifdef HAVE_SLSMG_UTF8_ENABLE |
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181 | SLsmg_utf8_enable(1); /* 1 == force, 0 == disable, -1 == autodetect */ |
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182 | SLtt_utf8_enable(1); |
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183 | #endif |
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184 | |
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185 | caca_add_dirty_rect(dp->cv, 0, 0, dp->cv->width, dp->cv->height); |
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186 | dp->resize.allow = 1; |
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187 | caca_set_canvas_size(dp->cv, SLtt_Screen_Cols, SLtt_Screen_Rows); |
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188 | dp->resize.allow = 0; |
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189 | |
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190 | return 0; |
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191 | } |
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192 | |
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193 | static int slang_end_graphics(caca_display_t *dp) |
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194 | { |
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195 | _caca_set_term_title(""); |
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196 | SLtt_set_mouse_mode(0, 0); |
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197 | SLtt_set_cursor_visibility(1); |
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198 | SLang_reset_tty(); |
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199 | SLsmg_reset_smg(); |
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200 | SLsig_unblock_signals(); |
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201 | |
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202 | #if defined HAVE_GETENV && defined HAVE_PUTENV |
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203 | slang_uninstall_terminal(dp); |
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204 | #endif |
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205 | |
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206 | free(dp->drv.p); |
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207 | |
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208 | return 0; |
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209 | } |
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210 | |
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211 | static int slang_set_display_title(caca_display_t *dp, char const *title) |
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212 | { |
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213 | _caca_set_term_title(title); |
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214 | |
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215 | return 0; |
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216 | } |
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217 | |
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218 | static int slang_get_display_width(caca_display_t const *dp) |
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219 | { |
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220 | /* Fallback to a 6x10 font */ |
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221 | return caca_get_canvas_width(dp->cv) * 6; |
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222 | } |
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223 | |
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224 | static int slang_get_display_height(caca_display_t const *dp) |
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225 | { |
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226 | /* Fallback to a 6x10 font */ |
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227 | return caca_get_canvas_height(dp->cv) * 10; |
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228 | } |
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229 | |
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230 | static void slang_display(caca_display_t *dp) |
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231 | { |
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232 | int x, y, i; |
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233 | |
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234 | for(i = 0; i < caca_get_dirty_rect_count(dp->cv); i++) |
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235 | { |
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236 | uint32_t const *cvchars, *cvattrs; |
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237 | int dx, dy, dw, dh; |
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238 | |
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239 | caca_get_dirty_rect(dp->cv, i, &dx, &dy, &dw, &dh); |
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240 | |
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241 | cvchars = (uint32_t const *)caca_get_canvas_chars(dp->cv) |
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242 | + dx + dy * dp->cv->width; |
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243 | cvattrs = (uint32_t const *)caca_get_canvas_attrs(dp->cv) |
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244 | + dx + dy * dp->cv->width; |
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245 | |
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246 | for(y = dy; y < dy + dh; y++) |
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247 | { |
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248 | SLsmg_gotorc(y, dx); |
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249 | for(x = dx; x < dx + dw; x++) |
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250 | { |
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251 | uint32_t ch = *cvchars++; |
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252 | |
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253 | #if defined(OPTIMISE_SLANG_PALETTE) |
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254 | /* If foreground == background, just don't use this colour |
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255 | * pair, and print a space instead of the real character. */ |
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256 | /* XXX: disabled, because I can't remember what it was |
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257 | * here for, and in cases where SLang does not render |
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258 | * bright backgrounds, it's just fucked up. */ |
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259 | #if 0 |
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260 | uint8_t fgcolor = caca_attr_to_ansi_fg(*cvattrs); |
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261 | uint8_t bgcolor = caca_attr_to_ansi_bg(*cvattrs); |
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262 | |
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263 | if(fgcolor >= 0x10) |
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264 | fgcolor = CACA_LIGHTGRAY; |
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265 | |
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266 | if(bgcolor >= 0x10) |
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267 | bgcolor = CACA_BLACK; /* FIXME: handle transparency */ |
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268 | |
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269 | if(fgcolor == bgcolor) |
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270 | { |
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271 | if(fgcolor == CACA_BLACK) |
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272 | fgcolor = CACA_WHITE; |
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273 | else if(fgcolor == CACA_WHITE |
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274 | || fgcolor <= CACA_LIGHTGRAY) |
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275 | fgcolor = CACA_BLACK; |
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276 | else |
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277 | fgcolor = CACA_WHITE; |
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278 | SLsmg_set_color(slang_assoc[fgcolor + 16 * bgcolor]); |
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279 | SLsmg_write_char(' '); |
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280 | cvattrs++; |
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281 | } |
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282 | else |
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283 | #endif |
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284 | { |
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285 | SLsmg_set_color(slang_assoc[caca_attr_to_ansi(*cvattrs++)]); |
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286 | slang_write_utf32(ch); |
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287 | } |
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288 | #else |
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289 | SLsmg_set_color(caca_attr_to_ansi(*cvattrs++)); |
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290 | slang_write_utf32(ch); |
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291 | #endif |
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292 | } |
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293 | |
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294 | cvchars += dp->cv->width - dw; |
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295 | cvattrs += dp->cv->width - dw; |
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296 | } |
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297 | } |
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298 | SLsmg_gotorc(caca_wherey(dp->cv), caca_wherex(dp->cv)); |
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299 | SLsmg_refresh(); |
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300 | } |
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301 | |
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302 | static void slang_handle_resize(caca_display_t *dp) |
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303 | { |
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304 | SLtt_get_screen_size(); |
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305 | dp->resize.w = SLtt_Screen_Cols; |
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306 | dp->resize.h = SLtt_Screen_Rows; |
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307 | |
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308 | if(dp->resize.w != caca_get_canvas_width(dp->cv) |
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309 | || dp->resize.h != caca_get_canvas_height(dp->cv)) |
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310 | SLsmg_reinit_smg(); |
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311 | } |
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312 | |
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313 | static int slang_get_event(caca_display_t *dp, caca_privevent_t *ev) |
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314 | { |
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315 | int intkey; |
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316 | |
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317 | if(!SLang_input_pending(0)) |
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318 | { |
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319 | ev->type = CACA_EVENT_NONE; |
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320 | return 0; |
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321 | } |
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322 | |
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323 | /* We first use SLang_getkey() to see whether Esc was pressed |
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324 | * alone, then (if it wasn't) we unget the key and use SLkp_getkey() |
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325 | * instead, so that escape sequences are interpreted. */ |
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326 | intkey = SLang_getkey(); |
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327 | |
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328 | if(intkey != 0x1b /* Esc */ || SLang_input_pending(0)) |
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329 | { |
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330 | SLang_ungetkey(intkey); |
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331 | intkey = SLkp_getkey(); |
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332 | } |
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333 | |
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334 | /* If the key was ASCII, return it immediately */ |
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335 | if(intkey < 0x7f) |
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336 | { |
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337 | ev->type = CACA_EVENT_KEY_PRESS; |
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338 | ev->data.key.ch = intkey; |
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339 | ev->data.key.utf32 = intkey; |
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340 | ev->data.key.utf8[0] = intkey; |
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341 | ev->data.key.utf8[1] = '\0'; |
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342 | return 1; |
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343 | } |
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344 | |
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345 | /* If the key was UTF-8, parse the whole sequence */ |
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346 | if(intkey >= 0x80 && intkey < 0x100) |
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347 | { |
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348 | int keys[7]; /* Necessary for ungetkey(); */ |
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349 | char utf8[7]; |
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350 | uint32_t utf32; |
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351 | size_t i, bytes = 0; |
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352 | |
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353 | keys[0] = intkey; |
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354 | utf8[0] = intkey; |
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355 | |
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356 | for(i = 1; i < 6; i++) |
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357 | { |
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358 | if(!SLang_input_pending(0)) |
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359 | break; |
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360 | keys[i] = SLang_getkey(); |
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361 | utf8[i] = (unsigned char)keys[i]; |
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362 | } |
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363 | |
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364 | utf8[i] = '\0'; |
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365 | utf32 = caca_utf8_to_utf32(utf8, &bytes); |
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366 | |
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367 | while(i > bytes) |
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368 | SLang_ungetkey(keys[--i]); |
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369 | |
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370 | if(bytes) |
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371 | { |
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372 | ev->type = CACA_EVENT_KEY_PRESS; |
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373 | ev->data.key.ch = 0; |
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374 | ev->data.key.utf32 = utf32; |
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375 | strcpy(ev->data.key.utf8, utf8); |
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376 | return 1; |
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377 | } |
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378 | } |
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379 | |
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380 | if(intkey == 0x3e9) |
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381 | { |
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382 | int button = (SLang_getkey() - ' ' + 1) & 0xf; |
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383 | int x = SLang_getkey() - '!'; |
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384 | int y = SLang_getkey() - '!'; |
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385 | |
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386 | ev->data.mouse.button = button; |
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387 | ev->type = CACA_EVENT_MOUSE_PRESS; |
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388 | _push_event(dp, ev); |
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389 | ev->type = CACA_EVENT_MOUSE_RELEASE; |
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390 | _push_event(dp, ev); |
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391 | |
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392 | if(dp->mouse.x == x && dp->mouse.y == y) |
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393 | return _pop_event(dp, ev); |
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394 | |
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395 | dp->mouse.x = x; |
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396 | dp->mouse.y = y; |
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397 | |
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398 | ev->type = CACA_EVENT_MOUSE_MOTION; |
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399 | ev->data.mouse.x = dp->mouse.x; |
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400 | ev->data.mouse.y = dp->mouse.y; |
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401 | return 1; |
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402 | } |
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403 | |
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404 | switch(intkey) |
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405 | { |
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406 | case SL_KEY_UP: ev->data.key.ch = CACA_KEY_UP; break; |
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407 | case SL_KEY_DOWN: ev->data.key.ch = CACA_KEY_DOWN; break; |
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408 | case SL_KEY_LEFT: ev->data.key.ch = CACA_KEY_LEFT; break; |
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409 | case SL_KEY_RIGHT: ev->data.key.ch = CACA_KEY_RIGHT; break; |
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410 | |
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411 | case SL_KEY_IC: ev->data.key.ch = CACA_KEY_INSERT; break; |
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412 | case SL_KEY_DELETE: ev->data.key.ch = CACA_KEY_DELETE; break; |
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413 | case 0x7f: |
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414 | case SL_KEY_BACKSPACE: ev->data.key.ch = CACA_KEY_BACKSPACE; break; |
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415 | case SL_KEY_HOME: ev->data.key.ch = CACA_KEY_HOME; break; |
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416 | case SL_KEY_END: ev->data.key.ch = CACA_KEY_END; break; |
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417 | case SL_KEY_PPAGE: ev->data.key.ch = CACA_KEY_PAGEUP; break; |
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418 | case SL_KEY_NPAGE: ev->data.key.ch = CACA_KEY_PAGEDOWN; break; |
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419 | |
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420 | case SL_KEY_F(1): ev->data.key.ch = CACA_KEY_F1; break; |
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421 | case SL_KEY_F(2): ev->data.key.ch = CACA_KEY_F2; break; |
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422 | case SL_KEY_F(3): ev->data.key.ch = CACA_KEY_F3; break; |
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423 | case SL_KEY_F(4): ev->data.key.ch = CACA_KEY_F4; break; |
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424 | case SL_KEY_F(5): ev->data.key.ch = CACA_KEY_F5; break; |
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425 | case SL_KEY_F(6): ev->data.key.ch = CACA_KEY_F6; break; |
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426 | case SL_KEY_F(7): ev->data.key.ch = CACA_KEY_F7; break; |
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427 | case SL_KEY_F(8): ev->data.key.ch = CACA_KEY_F8; break; |
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428 | case SL_KEY_F(9): ev->data.key.ch = CACA_KEY_F9; break; |
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429 | case SL_KEY_F(10): ev->data.key.ch = CACA_KEY_F10; break; |
---|
430 | case SL_KEY_F(11): ev->data.key.ch = CACA_KEY_F11; break; |
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431 | case SL_KEY_F(12): ev->data.key.ch = CACA_KEY_F12; break; |
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432 | |
---|
433 | default: |
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434 | /* Unknown key */ |
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435 | ev->type = CACA_EVENT_NONE; return 0; |
---|
436 | } |
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437 | |
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438 | ev->type = CACA_EVENT_KEY_PRESS; |
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439 | ev->data.key.utf32 = 0; |
---|
440 | ev->data.key.utf8[0] = '\0'; |
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441 | return 1; |
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442 | } |
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443 | |
---|
444 | static void slang_set_cursor(caca_display_t *dp, int flags) |
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445 | { |
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446 | SLtt_set_cursor_visibility(flags ? 1 : 0); |
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447 | } |
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448 | |
---|
449 | /* |
---|
450 | * XXX: following functions are local |
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451 | */ |
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452 | |
---|
453 | static void slang_init_palette(void) |
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454 | { |
---|
455 | /* See SLang ref., 5.4.4. */ |
---|
456 | static char *slang_colors[16] = |
---|
457 | { |
---|
458 | /* Standard colours */ |
---|
459 | "black", |
---|
460 | "blue", |
---|
461 | "green", |
---|
462 | "cyan", |
---|
463 | "red", |
---|
464 | "magenta", |
---|
465 | "brown", |
---|
466 | "lightgray", |
---|
467 | /* Bright colours */ |
---|
468 | "gray", |
---|
469 | "brightblue", |
---|
470 | "brightgreen", |
---|
471 | "brightcyan", |
---|
472 | "brightred", |
---|
473 | "brightmagenta", |
---|
474 | "yellow", |
---|
475 | "white", |
---|
476 | }; |
---|
477 | |
---|
478 | #if defined(OPTIMISE_SLANG_PALETTE) |
---|
479 | int i; |
---|
480 | |
---|
481 | for(i = 0; i < 16 * 16; i++) |
---|
482 | SLtt_set_color(i, NULL, slang_colors[slang_palette[i * 2]], |
---|
483 | slang_colors[slang_palette[i * 2 + 1]]); |
---|
484 | #else |
---|
485 | int fg, bg; |
---|
486 | |
---|
487 | for(bg = 0; bg < 16; bg++) |
---|
488 | for(fg = 0; fg < 16; fg++) |
---|
489 | { |
---|
490 | int i = fg + 16 * bg; |
---|
491 | SLtt_set_color(i, NULL, slang_colors[fg], slang_colors[bg]); |
---|
492 | } |
---|
493 | #endif |
---|
494 | } |
---|
495 | |
---|
496 | static void slang_write_utf32(uint32_t ch) |
---|
497 | { |
---|
498 | #ifdef HAVE_SLSMG_UTF8_ENABLE |
---|
499 | char buf[10]; |
---|
500 | int bytes; |
---|
501 | #else |
---|
502 | char ascii; |
---|
503 | #endif |
---|
504 | |
---|
505 | if(ch == CACA_MAGIC_FULLWIDTH) |
---|
506 | return; |
---|
507 | |
---|
508 | #ifdef HAVE_SLSMG_UTF8_ENABLE |
---|
509 | bytes = caca_utf32_to_utf8(buf, ch); |
---|
510 | buf[bytes] = '\0'; |
---|
511 | SLsmg_write_string(buf); |
---|
512 | #else |
---|
513 | ascii = caca_utf32_to_ascii(ch); |
---|
514 | SLsmg_write_char(ascii); |
---|
515 | if(caca_utf32_is_fullwidth(ch)) |
---|
516 | SLsmg_write_char(ascii); |
---|
517 | #endif |
---|
518 | } |
---|
519 | |
---|
520 | #if defined(HAVE_SIGNAL) |
---|
521 | static RETSIGTYPE sigwinch_handler(int sig) |
---|
522 | { |
---|
523 | sigwinch_d->resize.resized = 1; |
---|
524 | |
---|
525 | signal(SIGWINCH, sigwinch_handler); |
---|
526 | } |
---|
527 | #endif |
---|
528 | |
---|
529 | #if defined(HAVE_GETENV) && defined(HAVE_PUTENV) |
---|
530 | static void slang_install_terminal(caca_display_t *dp) |
---|
531 | { |
---|
532 | char *term, *colorterm; |
---|
533 | |
---|
534 | dp->drv.p->term = NULL; |
---|
535 | |
---|
536 | term = getenv("TERM"); |
---|
537 | colorterm = getenv("COLORTERM"); |
---|
538 | |
---|
539 | if(!term || strcmp(term, "xterm")) |
---|
540 | return; |
---|
541 | |
---|
542 | /* If we are using gnome-terminal, it's really a 16 colour terminal. |
---|
543 | * Ditto if we are using xfce4-terminal, or Konsole. */ |
---|
544 | if((colorterm && (!strcmp(colorterm, "gnome-terminal") |
---|
545 | || !strcmp(colorterm, "Terminal"))) |
---|
546 | || getenv("KONSOLE_DCOP_SESSION")) |
---|
547 | { |
---|
548 | (void)putenv("TERM=xterm-16color"); |
---|
549 | dp->drv.p->term = strdup(term); |
---|
550 | return; |
---|
551 | } |
---|
552 | } |
---|
553 | |
---|
554 | static void slang_uninstall_terminal(caca_display_t *dp) |
---|
555 | { |
---|
556 | /* Needs to be persistent because we use putenv() */ |
---|
557 | static char termenv[1024]; |
---|
558 | |
---|
559 | if(!dp->drv.p->term) |
---|
560 | return; |
---|
561 | |
---|
562 | snprintf(termenv, 1023, "TERM=%s", dp->drv.p->term); |
---|
563 | free(dp->drv.p->term); |
---|
564 | (void)putenv(termenv); |
---|
565 | } |
---|
566 | #endif |
---|
567 | |
---|
568 | /* |
---|
569 | * Driver initialisation |
---|
570 | */ |
---|
571 | |
---|
572 | int slang_install(caca_display_t *dp) |
---|
573 | { |
---|
574 | dp->drv.id = CACA_DRIVER_SLANG; |
---|
575 | dp->drv.driver = "slang"; |
---|
576 | |
---|
577 | dp->drv.init_graphics = slang_init_graphics; |
---|
578 | dp->drv.end_graphics = slang_end_graphics; |
---|
579 | dp->drv.set_display_title = slang_set_display_title; |
---|
580 | dp->drv.get_display_width = slang_get_display_width; |
---|
581 | dp->drv.get_display_height = slang_get_display_height; |
---|
582 | dp->drv.display = slang_display; |
---|
583 | dp->drv.handle_resize = slang_handle_resize; |
---|
584 | dp->drv.get_event = slang_get_event; |
---|
585 | dp->drv.set_mouse = NULL; |
---|
586 | dp->drv.set_cursor = slang_set_cursor; |
---|
587 | |
---|
588 | return 0; |
---|
589 | } |
---|
590 | |
---|
591 | #endif /* USE_SLANG */ |
---|
592 | |
---|